Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Hejian, Hebei, China Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

September Air Quality Analysis

Hejian, Hebei, China

2022
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
25th Sep 2024
141AQI
Lowest AQI recorded on
8th Sep 2026
30AQI

Same Day Analysis (30th September):
On this day, AQI across the 4 years varied significantly: 2026 ranks 3rd highest AQI at 74 of Moderate air quality, showing improvement over 2025 and 2022 on the same day.

Day & Night AQI Trend: 29th Sep - 30th Sep 2026

Hejian, Hebei, China

AQI
Day
Night
.

5 AM29th Sep 2026

6 PM

4 AM30th Sep 2026

Day time
Avg. Highest Time
7AM29th Sep

151AQI

Avg. Lowest Time
5PM29th Sep

128AQI

Night time
Avg. Highest Time
12AM30th Sep

153AQI

Avg. Lowest Time
8PM29th Sep

109AQI

In the last 24 hours,

Hejian's AQI reached its highest point of 153 at 12 AM during the Night, while the lowest point, 109, was recorded at 8 PM during the Night between 29th Sep and 30th Sep 2026.

Day & Night AQI Trend : Sep 2026

Hejian, Hebei, China

Sep
01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th
Day
Night
1st Sep 2026575 AMAQI
1st Sep 2026596 AMAQI
1st Sep 2026697 AMAQI
1st Sep 2026768 AMAQI
1st Sep 2026739 AMAQI
1st Sep 20266310 AMAQI
1st Sep 20265811 AMAQI
1st Sep 20265912 PMAQI
1st Sep 2026561 PMAQI
1st Sep 2026562 PMAQI
1st Sep 2026603 PMAQI
1st Sep 2026544 PMAQI
1st Sep 2026475 PMAQI
1st Sep 2026326 PMAQI
1st Sep 2026357 PMAQI
1st Sep 2026428 PMAQI
1st Sep 2026479 PMAQI
1st Sep 20266310 PMAQI
1st Sep 20266911 PMAQI
2nd Sep 20265212 AMAQI
2nd Sep 2026501 AMAQI
2nd Sep 2026522 AMAQI
2nd Sep 2026563 AMAQI
2nd Sep 2026614 AMAQI

24°C19/31°C

2nd Sep 2026585 AMAQI
2nd Sep 2026586 AMAQI
2nd Sep 2026577 AMAQI
2nd Sep 2026498 AMAQI
2nd Sep 2026449 AMAQI
2nd Sep 20263910 AMAQI
2nd Sep 20265711 AMAQI
2nd Sep 20264212 PMAQI
2nd Sep 2026291 PMAQI
2nd Sep 2026242 PMAQI
2nd Sep 2026283 PMAQI
2nd Sep 2026314 PMAQI
2nd Sep 2026385 PMAQI
2nd Sep 2026476 PMAQI
2nd Sep 2026507 PMAQI
2nd Sep 2026598 PMAQI
2nd Sep 2026629 PMAQI
2nd Sep 20266910 PMAQI
2nd Sep 20268111 PMAQI
3rd Sep 20266912 AMAQI
3rd Sep 2026771 AMAQI
3rd Sep 2026752 AMAQI
3rd Sep 2026763 AMAQI
3rd Sep 2026694 AMAQI

24°C19/30°C

3rd Sep 2026695 AMAQI
3rd Sep 2026756 AMAQI
3rd Sep 2026727 AMAQI
3rd Sep 2026718 AMAQI
3rd Sep 2026699 AMAQI
3rd Sep 20265510 AMAQI
3rd Sep 20264711 AMAQI
3rd Sep 20264212 PMAQI
3rd Sep 2026391 PMAQI
3rd Sep 2026332 PMAQI
3rd Sep 2026253 PMAQI
3rd Sep 2026344 PMAQI
3rd Sep 2026355 PMAQI
3rd Sep 2026426 PMAQI
3rd Sep 2026497 PMAQI
3rd Sep 2026588 PMAQI
3rd Sep 2026759 PMAQI
3rd Sep 20268510 PMAQI
3rd Sep 20267911 PMAQI
4th Sep 20268712 AMAQI
4th Sep 2026821 AMAQI
4th Sep 2026752 AMAQI
4th Sep 2026743 AMAQI
4th Sep 2026824 AMAQI

24°C18/32°C

4th Sep 2026965 AMAQI
4th Sep 2026976 AMAQI
4th Sep 2026927 AMAQI
4th Sep 20261068 AMAQI
4th Sep 2026939 AMAQI
4th Sep 20268510 AMAQI
4th Sep 20267111 AMAQI
4th Sep 20266512 PMAQI
4th Sep 2026551 PMAQI
4th Sep 2026622 PMAQI
4th Sep 2026473 PMAQI
4th Sep 2026404 PMAQI
4th Sep 2026395 PMAQI
4th Sep 2026436 PMAQI
4th Sep 2026577 PMAQI
4th Sep 2026578 PMAQI
4th Sep 2026699 PMAQI
4th Sep 20267110 PMAQI
4th Sep 20266211 PMAQI
5th Sep 20268012 AMAQI
5th Sep 2026741 AMAQI
5th Sep 2026802 AMAQI
5th Sep 2026803 AMAQI
5th Sep 2026754 AMAQI

24°C19/30°C

5th Sep 2026725 AMAQI
5th Sep 2026856 AMAQI
5th Sep 2026887 AMAQI
5th Sep 2026978 AMAQI
5th Sep 20261069 AMAQI
5th Sep 20269710 AMAQI
5th Sep 20267011 AMAQI
5th Sep 20265512 PMAQI
5th Sep 2026611 PMAQI
5th Sep 2026622 PMAQI
5th Sep 2026603 PMAQI
5th Sep 2026574 PMAQI
5th Sep 2026495 PMAQI
5th Sep 2026616 PMAQI
5th Sep 2026847 PMAQI
5th Sep 2026868 PMAQI
5th Sep 2026949 PMAQI
5th Sep 202610310 PMAQI
5th Sep 202610411 PMAQI
6th Sep 20268812 AMAQI
6th Sep 2026871 AMAQI
6th Sep 2026712 AMAQI
6th Sep 2026793 AMAQI
6th Sep 2026864 AMAQI

26°C21/33°C

6th Sep 2026885 AMAQI
6th Sep 2026916 AMAQI
6th Sep 2026937 AMAQI
6th Sep 2026988 AMAQI
6th Sep 20261029 AMAQI
6th Sep 20267310 AMAQI
6th Sep 20266911 AMAQI
6th Sep 20266012 PMAQI
6th Sep 2026521 PMAQI
6th Sep 2026482 PMAQI
6th Sep 2026563 PMAQI
6th Sep 2026344 PMAQI
6th Sep 2026345 PMAQI
6th Sep 2026436 PMAQI
6th Sep 2026547 PMAQI
6th Sep 2026588 PMAQI
6th Sep 2026729 PMAQI
6th Sep 20268110 PMAQI
6th Sep 20267611 PMAQI
7th Sep 20268612 AMAQI
7th Sep 2026961 AMAQI
7th Sep 2026702 AMAQI
7th Sep 2026743 AMAQI
7th Sep 2026694 AMAQI

25°C20/31°C

7th Sep 2026755 AMAQI
7th Sep 2026846 AMAQI
7th Sep 2026867 AMAQI
7th Sep 2026838 AMAQI
7th Sep 2026839 AMAQI
7th Sep 20267610 AMAQI
7th Sep 20266811 AMAQI
7th Sep 20268212 PMAQI
7th Sep 2026711 PMAQI
7th Sep 2026592 PMAQI
7th Sep 2026683 PMAQI
7th Sep 2026684 PMAQI
7th Sep 2026795 PMAQI
7th Sep 2026766 PMAQI
7th Sep 2026777 PMAQI
7th Sep 2026948 PMAQI
7th Sep 2026949 PMAQI
7th Sep 202610810 PMAQI
7th Sep 20269511 PMAQI
8th Sep 20267912 AMAQI
8th Sep 2026451 AMAQI
8th Sep 2026302 AMAQI
8th Sep 2026283 AMAQI
8th Sep 2026264 AMAQI

25°C19/32°C

8th Sep 2026375 AMAQI
8th Sep 2026326 AMAQI
8th Sep 2026407 AMAQI
8th Sep 2026238 AMAQI
8th Sep 2026249 AMAQI
8th Sep 20262410 AMAQI
8th Sep 20262311 AMAQI
8th Sep 20262212 PMAQI
8th Sep 2026301 PMAQI
8th Sep 2026222 PMAQI
8th Sep 2026253 PMAQI
8th Sep 2026264 PMAQI
8th Sep 2026235 PMAQI
8th Sep 2026276 PMAQI
8th Sep 2026267 PMAQI
8th Sep 2026288 PMAQI
8th Sep 2026259 PMAQI
8th Sep 20263210 PMAQI
8th Sep 20263511 PMAQI
9th Sep 20263412 AMAQI
9th Sep 2026341 AMAQI
9th Sep 2026332 AMAQI
9th Sep 2026303 AMAQI
9th Sep 2026354 AMAQI

16°C15/17°C

9th Sep 2026365 AMAQI
9th Sep 2026466 AMAQI
9th Sep 2026637 AMAQI
9th Sep 2026508 AMAQI
9th Sep 2026539 AMAQI
9th Sep 20267010 AMAQI
9th Sep 20264811 AMAQI
9th Sep 20262912 PMAQI
9th Sep 2026261 PMAQI
9th Sep 2026222 PMAQI
9th Sep 2026353 PMAQI
9th Sep 2026244 PMAQI
9th Sep 2026255 PMAQI
9th Sep 2026256 PMAQI
9th Sep 2026407 PMAQI
9th Sep 2026488 PMAQI
9th Sep 2026489 PMAQI
9th Sep 20266710 PMAQI
9th Sep 20265311 PMAQI
10th Sep 20265412 AMAQI
10th Sep 2026541 AMAQI
10th Sep 2026572 AMAQI
10th Sep 2026613 AMAQI
10th Sep 2026634 AMAQI

19°C15/24°C

10th Sep 2026695 AMAQI
10th Sep 2026826 AMAQI
10th Sep 2026867 AMAQI
10th Sep 2026968 AMAQI
10th Sep 2026939 AMAQI
10th Sep 20268610 AMAQI
10th Sep 20263711 AMAQI
10th Sep 20263912 PMAQI
10th Sep 2026351 PMAQI
10th Sep 2026322 PMAQI
10th Sep 2026233 PMAQI
10th Sep 2026254 PMAQI
10th Sep 2026285 PMAQI
10th Sep 2026256 PMAQI
10th Sep 2026487 PMAQI
10th Sep 2026558 PMAQI
10th Sep 2026699 PMAQI
10th Sep 20267010 PMAQI
10th Sep 20267011 PMAQI
11th Sep 20266212 AMAQI
11th Sep 2026711 AMAQI
11th Sep 2026762 AMAQI
11th Sep 20261053 AMAQI
11th Sep 2026914 AMAQI

20°C13/27°C

11th Sep 2026935 AMAQI
11th Sep 2026716 AMAQI
11th Sep 2026807 AMAQI
11th Sep 2026838 AMAQI
11th Sep 2026699 AMAQI
11th Sep 20265610 AMAQI
11th Sep 20265111 AMAQI
11th Sep 20265112 PMAQI
11th Sep 2026381 PMAQI
11th Sep 2026392 PMAQI
11th Sep 2026383 PMAQI
11th Sep 2026364 PMAQI
11th Sep 2026515 PMAQI
11th Sep 2026426 PMAQI
11th Sep 2026497 PMAQI
11th Sep 2026598 PMAQI
11th Sep 2026829 PMAQI
11th Sep 20269210 PMAQI
11th Sep 20267811 PMAQI
12th Sep 20266612 AMAQI
12th Sep 2026621 AMAQI
12th Sep 2026722 AMAQI
12th Sep 2026853 AMAQI
12th Sep 2026834 AMAQI

21°C15/29°C

12th Sep 2026815 AMAQI
12th Sep 2026896 AMAQI
12th Sep 2026957 AMAQI
12th Sep 20261238 AMAQI
12th Sep 20261259 AMAQI
12th Sep 202611510 AMAQI
12th Sep 202611111 AMAQI
12th Sep 202611212 PMAQI
12th Sep 20261011 PMAQI
12th Sep 2026812 PMAQI
12th Sep 2026713 PMAQI
12th Sep 2026644 PMAQI
12th Sep 2026535 PMAQI
12th Sep 2026776 PMAQI
12th Sep 2026917 PMAQI
12th Sep 2026928 PMAQI
12th Sep 20261079 PMAQI
12th Sep 202611310 PMAQI
12th Sep 202611811 PMAQI
13th Sep 202613012 AMAQI
13th Sep 20261281 AMAQI
13th Sep 20261122 AMAQI
13th Sep 20261133 AMAQI

21°C15/28°C

13th Sep 2026975 AMAQI
13th Sep 2026996 AMAQI
13th Sep 20261007 AMAQI
13th Sep 2026988 AMAQI
13th Sep 2026979 AMAQI
13th Sep 20267010 AMAQI
13th Sep 20263311 AMAQI
13th Sep 20269512 PMAQI
13th Sep 2026341 PMAQI
13th Sep 2026422 PMAQI
13th Sep 2026343 PMAQI
13th Sep 2026264 PMAQI
13th Sep 2026255 PMAQI
13th Sep 2026236 PMAQI
13th Sep 2026367 PMAQI
13th Sep 2026538 PMAQI
13th Sep 2026619 PMAQI
13th Sep 20266110 PMAQI
13th Sep 20267911 PMAQI
14th Sep 20266912 AMAQI
14th Sep 2026621 AMAQI
14th Sep 2026622 AMAQI
14th Sep 2026543 AMAQI
14th Sep 2026684 AMAQI

23°C17/30°C

14th Sep 2026805 AMAQI
14th Sep 2026766 AMAQI
14th Sep 2026817 AMAQI
14th Sep 2026688 AMAQI
14th Sep 2026399 AMAQI
14th Sep 20264410 AMAQI
14th Sep 20265111 AMAQI
14th Sep 20263912 PMAQI
14th Sep 2026301 PMAQI
14th Sep 2026292 PMAQI
14th Sep 2026273 PMAQI
14th Sep 2026274 PMAQI
14th Sep 2026345 PMAQI
14th Sep 2026476 PMAQI
14th Sep 2026557 PMAQI
14th Sep 2026558 PMAQI
14th Sep 2026729 PMAQI
14th Sep 20268410 PMAQI
14th Sep 20267411 PMAQI
15th Sep 20268612 AMAQI
15th Sep 2026921 AMAQI
15th Sep 2026912 AMAQI
15th Sep 2026873 AMAQI
15th Sep 2026884 AMAQI

20°C15/26°C

15th Sep 2026985 AMAQI
15th Sep 20261076 AMAQI
15th Sep 20261027 AMAQI
15th Sep 20261128 AMAQI
15th Sep 20261259 AMAQI
15th Sep 202610810 AMAQI
15th Sep 202610211 AMAQI
15th Sep 202610012 PMAQI
15th Sep 2026841 PMAQI
15th Sep 2026722 PMAQI
15th Sep 2026683 PMAQI
15th Sep 2026684 PMAQI
15th Sep 2026745 PMAQI
15th Sep 2026816 PMAQI
15th Sep 2026997 PMAQI
15th Sep 20261018 PMAQI
15th Sep 20261039 PMAQI
15th Sep 202611210 PMAQI
15th Sep 202610211 PMAQI
16th Sep 202614112 AMAQI
16th Sep 20261371 AMAQI
16th Sep 20261382 AMAQI
16th Sep 20261503 AMAQI
16th Sep 20261524 AMAQI

22°C15/28°C

16th Sep 20261495 AMAQI
16th Sep 20261506 AMAQI
16th Sep 20261537 AMAQI
16th Sep 20261528 AMAQI
16th Sep 20261249 AMAQI
16th Sep 202612510 AMAQI
16th Sep 202613211 AMAQI
16th Sep 202613512 PMAQI
16th Sep 20261351 PMAQI
16th Sep 20261222 PMAQI
16th Sep 20261103 PMAQI
16th Sep 20261024 PMAQI
16th Sep 20261115 PMAQI
16th Sep 20261026 PMAQI
16th Sep 2026967 PMAQI
16th Sep 20261298 PMAQI
16th Sep 20261309 PMAQI
16th Sep 202613110 PMAQI
16th Sep 202611111 PMAQI
17th Sep 20268012 AMAQI
17th Sep 2026921 AMAQI
17th Sep 2026972 AMAQI
17th Sep 2026863 AMAQI
17th Sep 2026904 AMAQI

24°C17/32°C

17th Sep 2026985 AMAQI
17th Sep 20261256 AMAQI
17th Sep 20261087 AMAQI
17th Sep 20261118 AMAQI
17th Sep 20261339 AMAQI
17th Sep 202613710 AMAQI
17th Sep 202613111 AMAQI
17th Sep 202613712 PMAQI
17th Sep 20261101 PMAQI
17th Sep 20261092 PMAQI
17th Sep 2026933 PMAQI
17th Sep 2026724 PMAQI
17th Sep 2026765 PMAQI
17th Sep 2026746 PMAQI
17th Sep 2026877 PMAQI
17th Sep 2026868 PMAQI
17th Sep 20261019 PMAQI
17th Sep 202613110 PMAQI
17th Sep 202612711 PMAQI
18th Sep 202612212 AMAQI
18th Sep 20261411 AMAQI
18th Sep 20261412 AMAQI
18th Sep 20261493 AMAQI
18th Sep 20261454 AMAQI

25°C20/33°C

18th Sep 20261535 AMAQI
18th Sep 20261516 AMAQI
18th Sep 20261307 AMAQI
18th Sep 20261308 AMAQI
18th Sep 20261129 AMAQI
18th Sep 202610510 AMAQI
18th Sep 202610211 AMAQI
18th Sep 20269512 PMAQI
18th Sep 2026911 PMAQI
18th Sep 2026912 PMAQI
18th Sep 20261263 PMAQI
18th Sep 20261044 PMAQI
18th Sep 20261145 PMAQI
18th Sep 20261206 PMAQI
18th Sep 20261127 PMAQI
18th Sep 20261028 PMAQI
18th Sep 2026899 PMAQI
18th Sep 20269210 PMAQI
18th Sep 20268711 PMAQI
19th Sep 20269212 AMAQI
19th Sep 2026931 AMAQI
19th Sep 2026802 AMAQI
19th Sep 2026823 AMAQI
19th Sep 2026824 AMAQI

23°C18/30°C

19th Sep 2026765 AMAQI
19th Sep 2026776 AMAQI
19th Sep 2026887 AMAQI
19th Sep 20261038 AMAQI
19th Sep 20261369 AMAQI
19th Sep 202612310 AMAQI
19th Sep 202610111 AMAQI
19th Sep 20268112 PMAQI
19th Sep 2026691 PMAQI
19th Sep 2026812 PMAQI
19th Sep 2026883 PMAQI
19th Sep 20261014 PMAQI
19th Sep 20261075 PMAQI
19th Sep 20261046 PMAQI
19th Sep 20261157 PMAQI
19th Sep 20261168 PMAQI
19th Sep 20261209 PMAQI
19th Sep 202613610 PMAQI
19th Sep 202613211 PMAQI
20th Sep 202613812 AMAQI
20th Sep 20261361 AMAQI
20th Sep 20261402 AMAQI
20th Sep 20261443 AMAQI
20th Sep 20261384 AMAQI

23°C17/29°C

20th Sep 20261455 AMAQI
20th Sep 20261506 AMAQI
20th Sep 20261487 AMAQI
20th Sep 20261498 AMAQI
20th Sep 20261409 AMAQI
20th Sep 202614710 AMAQI
20th Sep 202615311 AMAQI
20th Sep 202615212 PMAQI
20th Sep 20261461 PMAQI
20th Sep 20261362 PMAQI
20th Sep 20261333 PMAQI
20th Sep 20261334 PMAQI
20th Sep 20261435 PMAQI
20th Sep 20261466 PMAQI
20th Sep 20261447 PMAQI
20th Sep 20261488 PMAQI
20th Sep 20261429 PMAQI
20th Sep 202612110 PMAQI
20th Sep 202611911 PMAQI
21st Sep 202612712 AMAQI
21st Sep 20261321 AMAQI
21st Sep 20261292 AMAQI
21st Sep 20261303 AMAQI
21st Sep 20261324 AMAQI

24°C21/30°C

21st Sep 20261245 AMAQI
21st Sep 20261376 AMAQI
21st Sep 20261217 AMAQI
21st Sep 20261278 AMAQI
21st Sep 20261299 AMAQI
21st Sep 202613310 AMAQI
21st Sep 202613411 AMAQI
21st Sep 202612112 PMAQI
21st Sep 2026981 PMAQI
21st Sep 2026802 PMAQI
21st Sep 2026893 PMAQI
21st Sep 2026794 PMAQI
21st Sep 2026645 PMAQI
21st Sep 2026656 PMAQI
21st Sep 2026747 PMAQI
21st Sep 2026838 PMAQI
21st Sep 2026839 PMAQI
21st Sep 20268310 PMAQI
21st Sep 20268511 PMAQI
22nd Sep 20268312 AMAQI
22nd Sep 2026801 AMAQI
22nd Sep 2026792 AMAQI
22nd Sep 2026783 AMAQI
22nd Sep 2026694 AMAQI

24°C18/31°C

22nd Sep 20261405 AMAQI
22nd Sep 20261476 AMAQI
22nd Sep 20261437 AMAQI
22nd Sep 20261468 AMAQI
22nd Sep 20261569 AMAQI
22nd Sep 202615710 AMAQI
22nd Sep 202615111 AMAQI
22nd Sep 202611512 PMAQI
22nd Sep 2026711 PMAQI
22nd Sep 2026632 PMAQI
22nd Sep 2026583 PMAQI
22nd Sep 2026624 PMAQI
22nd Sep 2026565 PMAQI
22nd Sep 2026626 PMAQI
22nd Sep 2026707 PMAQI
22nd Sep 2026718 PMAQI
22nd Sep 2026829 PMAQI
22nd Sep 20269310 PMAQI
22nd Sep 20269611 PMAQI
23rd Sep 202610012 AMAQI
23rd Sep 20261101 AMAQI
23rd Sep 20261232 AMAQI
23rd Sep 20261163 AMAQI
23rd Sep 20261134 AMAQI

25°C19/31°C

23rd Sep 20261085 AMAQI
23rd Sep 20261186 AMAQI
23rd Sep 20261027 AMAQI
23rd Sep 20261088 AMAQI
23rd Sep 20261249 AMAQI
23rd Sep 202612910 AMAQI
23rd Sep 202613811 AMAQI
23rd Sep 202614912 PMAQI
23rd Sep 20261541 PMAQI
23rd Sep 20261492 PMAQI
23rd Sep 20261413 PMAQI
23rd Sep 20261464 PMAQI
23rd Sep 20261495 PMAQI
23rd Sep 20261466 PMAQI
23rd Sep 20261497 PMAQI
23rd Sep 20261518 PMAQI
23rd Sep 20261559 PMAQI
23rd Sep 202615710 PMAQI
23rd Sep 202615411 PMAQI
24th Sep 202615712 AMAQI
24th Sep 20261581 AMAQI
24th Sep 20261552 AMAQI
24th Sep 20261553 AMAQI
24th Sep 20261564 AMAQI

26°C19/32°C

24th Sep 20261555 AMAQI
24th Sep 20261586 AMAQI
24th Sep 20261577 AMAQI
24th Sep 20261578 AMAQI
24th Sep 20261569 AMAQI
24th Sep 202615610 AMAQI
24th Sep 202615611 AMAQI
24th Sep 202615412 PMAQI
24th Sep 20261521 PMAQI
24th Sep 20261482 PMAQI
24th Sep 20261413 PMAQI
24th Sep 20261244 PMAQI
24th Sep 20261215 PMAQI
24th Sep 20261206 PMAQI
24th Sep 20261137 PMAQI
24th Sep 20261028 PMAQI
24th Sep 2026979 PMAQI
24th Sep 20269610 PMAQI
24th Sep 20269911 PMAQI
25th Sep 202610212 AMAQI
25th Sep 2026931 AMAQI
25th Sep 2026902 AMAQI
25th Sep 2026933 AMAQI
25th Sep 20261014 AMAQI

23°C20/25°C

25th Sep 20261035 AMAQI
25th Sep 2026966 AMAQI
25th Sep 2026967 AMAQI
25th Sep 2026928 AMAQI
25th Sep 20261099 AMAQI
25th Sep 202612610 AMAQI
25th Sep 202610911 AMAQI
25th Sep 202610812 PMAQI
25th Sep 20261111 PMAQI
25th Sep 20261182 PMAQI
25th Sep 20261183 PMAQI
25th Sep 20261244 PMAQI
25th Sep 20261255 PMAQI
25th Sep 20261246 PMAQI
25th Sep 20261277 PMAQI
25th Sep 20261358 PMAQI
25th Sep 20261429 PMAQI
25th Sep 202614810 PMAQI
25th Sep 202615011 PMAQI
26th Sep 202615112 AMAQI
26th Sep 20261491 AMAQI
26th Sep 20261542 AMAQI
26th Sep 20261503 AMAQI
26th Sep 20261464 AMAQI

22°C18/28°C

26th Sep 20261385 AMAQI
26th Sep 20261436 AMAQI
26th Sep 20261507 AMAQI
26th Sep 20261508 AMAQI
26th Sep 20261529 AMAQI
26th Sep 202613810 AMAQI
26th Sep 202611711 AMAQI
26th Sep 202610312 PMAQI
26th Sep 2026951 PMAQI
26th Sep 2026782 PMAQI
26th Sep 2026753 PMAQI
26th Sep 2026794 PMAQI
26th Sep 2026825 PMAQI
26th Sep 2026906 PMAQI
26th Sep 2026967 PMAQI
26th Sep 20261098 PMAQI
26th Sep 20261279 PMAQI
26th Sep 202614010 PMAQI
26th Sep 202614211 PMAQI
27th Sep 202612512 AMAQI
27th Sep 2026891 AMAQI
27th Sep 2026732 AMAQI
27th Sep 2026793 AMAQI
27th Sep 2026744 AMAQI

23°C18/31°C

27th Sep 2026645 AMAQI
27th Sep 2026696 AMAQI
27th Sep 2026717 AMAQI
27th Sep 2026628 AMAQI
27th Sep 2026659 AMAQI
27th Sep 20266010 AMAQI
27th Sep 20264611 AMAQI
27th Sep 20265412 PMAQI
27th Sep 2026631 PMAQI
27th Sep 2026672 PMAQI
27th Sep 2026703 PMAQI
27th Sep 2026754 PMAQI
27th Sep 2026795 PMAQI
27th Sep 2026776 PMAQI
27th Sep 2026807 PMAQI
27th Sep 2026868 PMAQI
27th Sep 20261049 PMAQI
27th Sep 202611710 PMAQI
27th Sep 202611811 PMAQI
28th Sep 202611412 AMAQI
28th Sep 20261121 AMAQI
28th Sep 20261142 AMAQI
28th Sep 20261133 AMAQI
28th Sep 20261164 AMAQI

22°C17/27°C

28th Sep 20261245 AMAQI
28th Sep 20261066 AMAQI
28th Sep 2026757 AMAQI
28th Sep 2026538 AMAQI
28th Sep 2026479 AMAQI
28th Sep 20265010 AMAQI
28th Sep 20265311 AMAQI
28th Sep 20266812 PMAQI
28th Sep 2026761 PMAQI
28th Sep 2026802 PMAQI
28th Sep 2026793 PMAQI
28th Sep 2026804 PMAQI
28th Sep 2026825 PMAQI
28th Sep 2026826 PMAQI
28th Sep 2026867 PMAQI
28th Sep 2026948 PMAQI
28th Sep 20261099 PMAQI
28th Sep 202612710 PMAQI
28th Sep 202612311 PMAQI
29th Sep 202613312 AMAQI
29th Sep 20261411 AMAQI
29th Sep 20261372 AMAQI
29th Sep 20261303 AMAQI
29th Sep 20261354 AMAQI

22°C17/27°C

29th Sep 20261455 AMAQI
29th Sep 20261486 AMAQI
29th Sep 20261517 AMAQI
29th Sep 20261478 AMAQI
29th Sep 20261399 AMAQI
29th Sep 202614010 AMAQI
29th Sep 202614211 AMAQI
29th Sep 202614512 PMAQI
29th Sep 20261501 PMAQI
29th Sep 20261492 PMAQI
29th Sep 20261503 PMAQI
29th Sep 20261434 PMAQI
29th Sep 20261285 PMAQI
29th Sep 20261296 PMAQI
29th Sep 20261127 PMAQI
29th Sep 20261098 PMAQI
29th Sep 20261139 PMAQI
29th Sep 202614710 PMAQI
29th Sep 202614611 PMAQI
30th Sep 202615312 AMAQI
30th Sep 20261511 AMAQI
30th Sep 20261412 AMAQI
30th Sep 20261283 AMAQI
30th Sep 20261254 AMAQI

23°C17/32°C

30th Sep 20261075 AMAQI
5 AM
30th Sep 20261066 AMAQI
30th Sep 2026487 AMAQI
30th Sep 2026488 AMAQI
30th Sep 2026579 AMAQI
30th Sep 20265510 AMAQI
30th Sep 20266111 AMAQI
11 AM
30th Sep 20265912 PMAQI
30th Sep 2026521 PMAQI
30th Sep 2026492 PMAQI
30th Sep 2026483 PMAQI
30th Sep 2026464 PMAQI
30th Sep 2026395 PMAQI
30th Sep 2026396 PMAQI
6 PM
30th Sep 2026427 PMAQI
30th Sep 2026438 PMAQI
30th Sep 2026619 PMAQI
30th Sep 20266210 PMAQI
30th Sep 20265311 PMAQI
11 PM
4 AM

18°C14/21°C

Day time
Avg. Highest Time
5 AM - 9 AM

99AQI

5 hours / Day
150 hours / Month
Avg. Lowest Time
4 PM - 6 PM

70AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 9 AM (Avg. 99), while the lowest AQI was between 4 PM to 6 PM (Avg. 70).
Night time
Avg. Highest Time
10 PM - 11 PM

99AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
7 PM

78AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 99), while the lowest AQI was between 7 PM to 7 PM (Avg. 78).

2026 Days Vs Air Quality

Hejian, Hebei, China

2026

13%

36

51%

140

26%

71

10%

26

Total number of days with different AQI categories in last 273 days in 2026 (92 days remaining)

Good
36 Days
Moderate
140 Days
Poor
71 Days
Unhealthy
26 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 13%

Health Risk Level:

Extreme

In 2026, 13% of 273 days were within WHO’s safe air quality limits. The risk of health issues is Extreme, potentially causing respiratory problems, heart disease, skin issues, and stress, especially for children, the elderly, and those with pre-existing conditions.

Annual Air Quality Insights

Hejian, Hebei, China

AQI levels in 2026

AQI (US)
PM₂.₅
PM₁₀
CO
SO₂
NO₂
O₃
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
94AQI (US)
2nd January 2026
128AQI (US)
3rd January 2026
171AQI (US)
4th January 2026
187AQI (US)
5th January 2026
171AQI (US)
6th January 2026
152AQI (US)
7th January 2026
93AQI (US)
8th January 2026
109AQI (US)
9th January 2026
132AQI (US)
10th January 2026
52AQI (US)
11th January 2026
45AQI (US)
12th January 2026
106AQI (US)
13th January 2026
115AQI (US)
14th January 2026
125AQI (US)
15th January 2026
170AQI (US)
16th January 2026
152AQI (US)
17th January 2026
94AQI (US)
18th January 2026
78AQI (US)
19th January 2026
58AQI (US)
20th January 2026
71AQI (US)
21st January 2026
107AQI (US)
22nd January 2026
146AQI (US)
23rd January 2026
158AQI (US)
24th January 2026
175AQI (US)
25th January 2026
130AQI (US)
26th January 2026
107AQI (US)
27th January 2026
141AQI (US)
28th January 2026
146AQI (US)
29th January 2026
129AQI (US)
30th January 2026
147AQI (US)
31st January 2026
156AQI (US)
1st February 2026
154AQI (US)
2nd February 2026
122AQI (US)
3rd February 2026
159AQI (US)
4th February 2026
164AQI (US)
5th February 2026
126AQI (US)
6th February 2026
48AQI (US)
7th February 2026
93AQI (US)
8th February 2026
118AQI (US)
9th February 2026
142AQI (US)
10th February 2026
151AQI (US)
11th February 2026
148AQI (US)
12th February 2026
159AQI (US)
13th February 2026
168AQI (US)
14th February 2026
160AQI (US)
15th February 2026
57AQI (US)
16th February 2026
80AQI (US)
17th February 2026
113AQI (US)
18th February 2026
104AQI (US)
19th February 2026
119AQI (US)
20th February 2026
92AQI (US)
21st February 2026
111AQI (US)
22nd February 2026
71AQI (US)
23rd February 2026
48AQI (US)
24th February 2026
100AQI (US)
25th February 2026
103AQI (US)
26th February 2026
127AQI (US)
27th February 2026
73AQI (US)
28th February 2026
104AQI (US)
1st March 2026
126AQI (US)
2nd March 2026
152AQI (US)
3rd March 2026
159AQI (US)
4th March 2026
155AQI (US)
5th March 2026
109AQI (US)
6th March 2026
113AQI (US)
7th March 2026
113AQI (US)
8th March 2026
148AQI (US)
9th March 2026
113AQI (US)
10th March 2026
138AQI (US)
11th March 2026
154AQI (US)
12th March 2026
152AQI (US)
13th March 2026
154AQI (US)
14th March 2026
125AQI (US)
15th March 2026
77AQI (US)
16th March 2026
106AQI (US)
17th March 2026
134AQI (US)
18th March 2026
83AQI (US)
19th March 2026
81AQI (US)
20th March 2026
116AQI (US)
21st March 2026
134AQI (US)
22nd March 2026
119AQI (US)
23rd March 2026
154AQI (US)
24th March 2026
163AQI (US)
25th March 2026
159AQI (US)
26th March 2026
163AQI (US)
27th March 2026
116AQI (US)
28th March 2026
117AQI (US)
29th March 2026
121AQI (US)
30th March 2026
79AQI (US)
31st March 2026
74AQI (US)
1st April 2026
90AQI (US)
2nd April 2026
110AQI (US)
3rd April 2026
118AQI (US)
4th April 2026
89AQI (US)
5th April 2026
86AQI (US)
6th April 2026
46AQI (US)
7th April 2026
53AQI (US)
8th April 2026
92AQI (US)
9th April 2026
92AQI (US)
10th April 2026
86AQI (US)
11th April 2026
96AQI (US)
12th April 2026
130AQI (US)
13th April 2026
117AQI (US)
14th April 2026
119AQI (US)
15th April 2026
140AQI (US)
16th April 2026
121AQI (US)
17th April 2026
146AQI (US)
18th April 2026
125AQI (US)
19th April 2026
99AQI (US)
20th April 2026
71AQI (US)
21st April 2026
66AQI (US)
22nd April 2026
57AQI (US)
23rd April 2026
77AQI (US)
24th April 2026
65AQI (US)
25th April 2026
67AQI (US)
26th April 2026
85AQI (US)
27th April 2026
56AQI (US)
28th April 2026
54AQI (US)
29th April 2026
50AQI (US)
30th April 2026
71AQI (US)
1st May 2026
117AQI (US)
2nd May 2026
65AQI (US)
3rd May 2026
38AQI (US)
4th May 2026
50AQI (US)
5th May 2026
75AQI (US)
6th May 2026
78AQI (US)
7th May 2026
69AQI (US)
8th May 2026
62AQI (US)
9th May 2026
65AQI (US)
10th May 2026
77AQI (US)
11th May 2026
60AQI (US)
12th May 2026
99AQI (US)
13th May 2026
107AQI (US)
14th May 2026
109AQI (US)
15th May 2026
118AQI (US)
16th May 2026
76AQI (US)
17th May 2026
65AQI (US)
18th May 2026
59AQI (US)
19th May 2026
56AQI (US)
20th May 2026
65AQI (US)
21st May 2026
71AQI (US)
22nd May 2026
82AQI (US)
23rd May 2026
75AQI (US)
24th May 2026
73AQI (US)
25th May 2026
68AQI (US)
26th May 2026
51AQI (US)
27th May 2026
68AQI (US)
28th May 2026
45AQI (US)
29th May 2026
44AQI (US)
30th May 2026
51AQI (US)
31st May 2026
69AQI (US)
1st June 2026
74AQI (US)
2nd June 2026
89AQI (US)
3rd June 2026
78AQI (US)
4th June 2026
44AQI (US)
5th June 2026
35AQI (US)
6th June 2026
42AQI (US)
7th June 2026
22AQI (US)
8th June 2026
36AQI (US)
9th June 2026
38AQI (US)
10th June 2026
42AQI (US)
11th June 2026
41AQI (US)
12th June 2026
70AQI (US)
13th June 2026
67AQI (US)
14th June 2026
72AQI (US)
15th June 2026
112AQI (US)
16th June 2026
79AQI (US)
17th June 2026
69AQI (US)
18th June 2026
120AQI (US)
19th June 2026
95AQI (US)
20th June 2026
60AQI (US)
21st June 2026
54AQI (US)
22nd June 2026
59AQI (US)
23rd June 2026
72AQI (US)
24th June 2026
104AQI (US)
25th June 2026
72AQI (US)
26th June 2026
39AQI (US)
27th June 2026
53AQI (US)
28th June 2026
81AQI (US)
29th June 2026
72AQI (US)
30th June 2026
92AQI (US)
1st July 2026
77AQI (US)
2nd July 2026
101AQI (US)
3rd July 2026
100AQI (US)
4th July 2026
59AQI (US)
5th July 2026
43AQI (US)
6th July 2026
54AQI (US)
7th July 2026
60AQI (US)
8th July 2026
52AQI (US)
9th July 2026
68AQI (US)
10th July 2026
59AQI (US)
11th July 2026
79AQI (US)
12th July 2026
52AQI (US)
13th July 2026
52AQI (US)
14th July 2026
55AQI (US)
15th July 2026
53AQI (US)
16th July 2026
87AQI (US)
17th July 2026
43AQI (US)
18th July 2026
61AQI (US)
19th July 2026
83AQI (US)
20th July 2026
97AQI (US)
21st July 2026
57AQI (US)
22nd July 2026
85AQI (US)
23rd July 2026
60AQI (US)
24th July 2026
91AQI (US)
25th July 2026
76AQI (US)
26th July 2026
72AQI (US)
27th July 2026
69AQI (US)
28th July 2026
53AQI (US)
29th July 2026
36AQI (US)
30th July 2026
49AQI (US)
31st July 2026
44AQI (US)
1st August 2026
58AQI (US)
2nd August 2026
61AQI (US)
3rd August 2026
48AQI (US)
4th August 2026
44AQI (US)
5th August 2026
47AQI (US)
6th August 2026
84AQI (US)
7th August 2026
88AQI (US)
8th August 2026
46AQI (US)
9th August 2026
59AQI (US)
10th August 2026
67AQI (US)
11th August 2026
58AQI (US)
12th August 2026
55AQI (US)
13th August 2026
31AQI (US)
14th August 2026
46AQI (US)
15th August 2026
57AQI (US)
16th August 2026
49AQI (US)
17th August 2026
56AQI (US)
18th August 2026
63AQI (US)
19th August 2026
86AQI (US)
20th August 2026
104AQI (US)
21st August 2026
121AQI (US)
22nd August 2026
80AQI (US)
23rd August 2026
71AQI (US)
24th August 2026
85AQI (US)
25th August 2026
71AQI (US)
26th August 2026
34AQI (US)
27th August 2026
65AQI (US)
28th August 2026
28AQI (US)
29th August 2026
43AQI (US)
30th August 2026
60AQI (US)
31st August 2026
57AQI (US)
1st September 2026
58AQI (US)
2nd September 2026
50AQI (US)
3rd September 2026
59AQI (US)
4th September 2026
71AQI (US)
5th September 2026
78AQI (US)
6th September 2026
71AQI (US)
7th September 2026
80AQI (US)
8th September 2026
30AQI (US)
9th September 2026
41AQI (US)
10th September 2026
57AQI (US)
11th September 2026
65AQI (US)
12th September 2026
91AQI (US)
13th September 2026
71AQI (US)
14th September 2026
55AQI (US)
15th September 2026
94AQI (US)
16th September 2026
130AQI (US)
17th September 2026
104AQI (US)
18th September 2026
117AQI (US)
19th September 2026
99AQI (US)
20th September 2026
141AQI (US)
21st September 2026
107AQI (US)
22nd September 2026
97AQI (US)
23rd September 2026
133AQI (US)
24th September 2026
139AQI (US)
25th September 2026
114AQI (US)
26th September 2026
123AQI (US)
27th September 2026
78AQI (US)
28th September 2026
90AQI (US)
29th September 2026
138AQI (US)
30th September 2026
74AQI (US)
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

124AQI (US)

115AQI (US)

126AQI (US)

89AQI (US)

71AQI (US)

66AQI (US)

65AQI (US)

62AQI (US)

89AQI (US)

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202690AQI (US)

1
7
14
9
2
7
12
7
5
16
10
2
19
9
4
23
4
9
18
3
5
25
1
10
19
2
3
17
10
36
140
71
26

Highest AQI (US) recorded in

March

126AQI (US)

Lowest AQI (US) recorded in

August

62AQI (US)

202597AQI (US)

11
18
1
1
1
15
11
1
16
10
5
17
13
23
8
29
1
31
31
28
2
16
9
6
1
5
14
10
8
13
9
1
2
230
99
32
2

Highest AQI (US) recorded in

November

128AQI (US)

Lowest AQI (US) recorded in

August

62AQI (US)

202485AQI (US)

31
29
31
28
2
29
30
31
31
3
18
8
3
6
11
11
12
13
5
15
15
1
8
291
47
17

Highest AQI (US) recorded in

October

124AQI (US)

Lowest AQI (US) recorded in

August

65AQI (US)

2023101AQI (US)

1
9
10
7
1
9
11
8
3
7
3
3
31
1
55
28
18
1

Highest AQI (US) recorded in

March

129AQI (US)

Lowest AQI (US) recorded in

December

59AQI (US)

2022100AQI (US)

6
14
10
11
7
4
2
11
14
4
1
18
9
2
27
4
1
22
7
7
16
1
2
3
2
15
12
5
11
13
2
3
9
8
7
3
2
13
9
3
4
25
162
98
32
7

Highest AQI (US) recorded in

January

134AQI (US)

Lowest AQI (US) recorded in

August

61AQI (US)

2021111AQI (US)

8
10
8
4
10
12
4
2
4
7
17
1
2
12
12
1
1
1
17
10
1
2
13
16
1
9
16
6
20
11
2
17
10
1
4
13
8
6
5
6
11
7
1
1
12
9
8
1
22
148
122
53
12
3

Highest AQI (US) recorded in

March

163AQI (US)

Lowest AQI (US) recorded in

July

64AQI (US)

2020115AQI (US)

1
5
6
1
8
11
2
10
6
2
11
17
2
5
24
2
17
14
2
13
11
3
11
12
8
9
14
5
2
7
8
14
2
3
96
123
39
4

Highest AQI (US) recorded in

December

144AQI (US)

Lowest AQI (US) recorded in

May

99AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2020(Avg.)
115AQI (US)
Least Polluted Year Recorded
2024(Avg.)
85AQI (US)

Hejian's annual 2026 AQI (US) (90) shows an average percentage change of -10.4% (improved AQI (US)) compared to previous years: 2020 (115), 2021 (111), 2022 (100), 2023 (101), 2024 (85), 2025 (97).